75 lines
3.2 KiB
C
75 lines
3.2 KiB
C
/*
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* This file is part of the MicroPython project, http://micropython.org/
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*
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* The MIT License (MIT)
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*
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* Copyright (c) 2018 hathach for Adafruit Industries
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*/
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static const uint8_t usb_hid_descriptor_template[] = {
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0x09, // 0 bLength
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0x21, // 1 bDescriptorType (HID)
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0x11, 0x01, // 2 bcdHID 1.11
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0x00, // 3 bCountryCode
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0x01, // 4 bNumDescriptors
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0x22, // 5 bDescriptorType[0] (HID)
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0xFF, 0xFF, // 6,7 wDescriptorLength[0] [SET AT RUNTIME: lo, hi]
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#define HID_DESCRIPTOR_LENGTH_INDEX 6
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0x07, // 8 bLength
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0x05, // 9 bDescriptorType (Endpoint)
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0xFF, // 10 bEndpointAddress (IN/D2H) [SET AT RUNTIME: 0x80 | endpoint]
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#define HID_IN_ENDPOINT_INDEX 10
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0x03, // 11 bmAttributes (Interrupt)
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0x40, 0x00, // 12,13 wMaxPacketSize 64
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0x08, // 14 bInterval 8 (unit depends on device speed)
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0x07, // 15 bLength
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0x05, // 16 bDescriptorType (Endpoint)
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0xFF, // 17 bEndpointAddress (OUT/H2D) [SET AT RUNTIME]
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#define HID_OUT_ENDPOINT_INDEX 17
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0x03, // 18 bmAttributes (Interrupt)
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0x40, 0x00, // 19,20 wMaxPacketSize 64
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0x08, // 21 bInterval 8 (unit depends on device speed)
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};
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// Is the HID device enabled?
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bool usb_hid_enabled;
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size_t usb_hid_descriptor_length(void) {
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return sizeof(usb_hid_descriptor);
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}
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static const char[] usb_hid_interface_name = USB_INTERFACE_NAME " Mass Storage";
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size_t usb_hid_add_descriptor(uint8_t *descriptor_buf, uint8_t *current_interface, uint8_t *current_endpoint, uint8_t* current_interface_string, uint16_t report_descriptor_length) {
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memcpy(descriptor_buf, usb_hid_descriptor_template, sizeof(usb_hid_descriptor_template));
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descriptor_buf[HID_DESCRIPTOR_LENGTH_INDEX] = report_descriptor_length & 0xFF;
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descriptor_buf[HID_DESCRIPTOR_LENGTH_INDEX + 1] = (report_descriptor_length >> 8);
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descriptor_buf[HID_IN_ENDPOINT_INDEX] = USB_HID_EP_NUM_IN ? USB_HID_EP_NUM_IN : *current_endpoint;
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descriptor_buf[HID_OUT_ENDPOINT_INDEX] = 0x80 | (USB_HID_EP_NUM_OUT ? USB_HID_EP_NUM_OUT : *current_endpoint);
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(*current_endpoint)++:
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return sizeof(usb_hid_descriptor_template);
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}
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